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Implosion of living Nautilus under increased pressure

Published online by Cambridge University Press:  08 February 2016

Yasumitsu Kanie
Affiliation:
Yokosuka City Museum; Fukadadai, Yokosuka 238, Japan
Yoshio Fukuda
Affiliation:
Research Laboratory of Public Health of Chiba Prefecture; Nitona, Chiba 280, Japan
Hideaki Nakayama
Affiliation:
Japan Marine Science and Technology Center; Natsushima, Yokosuka 237, Japan
Kunihiro Seki
Affiliation:
Japan Marine Science and Technology Center; Natsushima, Yokosuka 237, Japan
Mutsuo Hattori
Affiliation:
Japan Marine Science and Technology Center; Natsushima, Yokosuka 237, Japan

Abstract

In a hyperbaric chamber, a living mature specimen of Nautilus pompilius withstood a hydrostatic pressure of 8.05 MPa (80.5 kg/cm2) equivalent to 785 m deep in the sea. Thereafter it was killed instantly by implosion of the shell. Before implosion, the animal reacted physiologically to increasing pressure. Therefore, the depth of 785 m can be assigned the depth limit of N. pompilius. The result bears on critical interpretations on the paleoecology and paleobiology of extinct nautiloids and ammonoids with similar shells.

Type
Articles
Copyright
Copyright © The Paleontological Society 

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References

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